EP1202150A3 - Microprocessor with program and data protection function under multi-task environment - Google Patents

Microprocessor with program and data protection function under multi-task environment Download PDF

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Publication number
EP1202150A3
EP1202150A3 EP01309182A EP01309182A EP1202150A3 EP 1202150 A3 EP1202150 A3 EP 1202150A3 EP 01309182 A EP01309182 A EP 01309182A EP 01309182 A EP01309182 A EP 01309182A EP 1202150 A3 EP1202150 A3 EP 1202150A3
Authority
EP
European Patent Office
Prior art keywords
program
microprocessor
protection function
data protection
function under
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP01309182A
Other languages
German (de)
French (fr)
Other versions
EP1202150B1 (en
EP1202150A2 (en
Inventor
Kenji c/o Toshiba Corporation Shirakawa
Keiichi c/o Toshiba Corporation Teramoto
Mikio c/o Toshiba Corporation Hashimoto
Kensaku c/o Toshiba Corporation Fujimoto
Satoshi c/o Toshiba Corporation Ozaki
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toshiba Corp
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Toshiba Corp
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Filing date
Publication date
Application filed by Toshiba Corp filed Critical Toshiba Corp
Publication of EP1202150A2 publication Critical patent/EP1202150A2/en
Publication of EP1202150A3 publication Critical patent/EP1202150A3/en
Application granted granted Critical
Publication of EP1202150B1 publication Critical patent/EP1202150B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F21/00—Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
    • G06F21/70—Protecting specific internal or peripheral components, in which the protection of a component leads to protection of the entire computer
    • G06F21/71—Protecting specific internal or peripheral components, in which the protection of a component leads to protection of the entire computer to assure secure computing or processing of information
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F2221/00—Indexing scheme relating to security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
    • G06F2221/21—Indexing scheme relating to G06F21/00 and subgroups addressing additional information or applications relating to security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
    • G06F2221/2105—Dual mode as a secondary aspect

Abstract

In a microprocessor, a program key for decrypting a program and a data key for encrypting/decrypting data processed by the program are handled as cryptographically inseparable pair inside the microprocessor, so that it becomes possible for the microprocessor to protect processes that actually execute the program, without an intervention of the operating system, and it becomes possible to conceal secret information of the program not only from the other user program but also from the operating system.
EP01309182A 2000-10-31 2001-10-30 Microprocessor with program and data protection function under multi-task environment Expired - Lifetime EP1202150B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2000333635 2000-10-31
JP2000333635A JP4153653B2 (en) 2000-10-31 2000-10-31 Microprocessor and data protection method

Publications (3)

Publication Number Publication Date
EP1202150A2 EP1202150A2 (en) 2002-05-02
EP1202150A3 true EP1202150A3 (en) 2003-07-30
EP1202150B1 EP1202150B1 (en) 2006-11-29

Family

ID=18809679

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01309182A Expired - Lifetime EP1202150B1 (en) 2000-10-31 2001-10-30 Microprocessor with program and data protection function under multi-task environment

Country Status (4)

Country Link
US (2) US7065215B2 (en)
EP (1) EP1202150B1 (en)
JP (1) JP4153653B2 (en)
DE (1) DE60124845T2 (en)

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Also Published As

Publication number Publication date
US7673152B2 (en) 2010-03-02
EP1202150B1 (en) 2006-11-29
US20020051536A1 (en) 2002-05-02
US7065215B2 (en) 2006-06-20
US20060126849A1 (en) 2006-06-15
JP2002140236A (en) 2002-05-17
EP1202150A2 (en) 2002-05-02
JP4153653B2 (en) 2008-09-24
DE60124845D1 (en) 2007-01-11
DE60124845T2 (en) 2007-04-19

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